Core Type
                     Cortex-M4 with FPU
                  
				 
                     
CPU Clock Speed
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CPU Architecture
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CPU Features
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                     Operating Frequency [Max] (MHz)
                     64 MHz
                  
				 
				 	
				 
				 
                     
EEPROM (kB)
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Debugging
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                     Upgrade Type
                     Supports Over-the-Air upgrade (OTA)
                  
				 
				 
				 
                     crystal (optional)
                     32.768 kHz
                  
				 
				 
                     External clock
                     32.768 kHz
                  				 
				 
                     Timers [Number, bits]
                     2 × 32-bit 16 MHz
                  
				 
                     Real-Time Clock
                     1 × 32.768 kHz 
                  
				 
                     Watchdog timer
                     32.768 kHz
                  				 
				 
                     
GPIO
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Pitch
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                     ADC [Number, bits]
                     8-channel 12-bit 
                  				 
				 
                     True Random Number Generator
                     有
                  
				 
				 				 
				 
				 
				 
				 
                     SPI
                     3 × SPI master and slave
                  				 
				 
                     
DAC [Number, bits]
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SSI
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                     TWI
                     1 × TWI master and slave
                  
				 
				 				 
				 
                     USB
                     1 × USB Full-speed device
                  
				 
                     SPI
                     1 × high-speed SPI master
                  
				 
                     Quad SPI
                     1 × Quad SPI (w.XIP)
                  
				 	
				 	
				 
                     Human Machine Interface
                     -
                  					 
				 	
				 	
				 	
				 
				 
                     Supply Voltage [Min to Max] (V)
                     1.7 V - 3.6 V 
                  	
				 	
				 
                     On-chip VBUS
                     On-chip VBUS 3.3 V reg
                  	
				 
                     Regulated supply for external components
                     Regulated supply for external components
                  					 
				 
                     Power fail
                     Power fail comparator and brownout
                  	
				 
				 
                     
 Crypto Accelerator
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Public Key Hardware Accelerator
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Accelerator
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Current
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Sensor Controller
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Standby
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                     Transceiver Compatible
                     Bluetooth Low Energy/Bluetooth mesh/ANT/2.4 GHz
                  
				 
                     Receiver Sensitivity
                     -96 dBm (Bluetooth Low Energy 1 Mbps)
                  
				 				 
				 
                     
Frequency Regulation
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                     Protocols
                     Bluetooth Low Energy/ANT/2.4 GHz
                  
				 				 
				 
                     bluetooth 5.1 support
                     Yes
                  				 
				 
                     Dimension
                     6 × 6 QFN48 w/32 GPIOs 3.0 × 3.2 WLCSP w/32 GPIOs & USB
                  	
				 					 
				 
                     
DSP RAM
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DSP Clock Speed
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DSP Clock Speed
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Voice Services
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General
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